Figure 84 outlines the way in which tags are retrieved and traffic prioritized on a network.
Figure 84. Traffic Prioritization
NO
Take Priority from
DSCP
START
Is VLAN tag?
YES
Is VLAN priority tag (VLAN id = 0)
|
| YES | |
| NO | ||
|
|
|
|
Is priority tag = 0 |
|
| Take priority from tag |
|
|
| |
|
|
|
|
|
|
|
|
NO
Take priority from tag
YES
Take Priority from
DSCP
Table 64 outlines the VLAN priority and DSCP values.
Table 64. VLAN Priority Tags
VLAN Priority | Priority | DSCP Value |
0 | Best Effort | 0 |
|
|
|
1 | Background | 16 |
|
|
|
2 | Background | 8 |
|
|
|
3 | Best Effort | 24 |
|
|
|
4 | Video | 32 |
|
|
|
5 | Video | 40 |
|
|
|
6 | Voice | 48 |
|
|
|
7 | Voice | 56 |
|
|
|
208 © 2001- 2006
